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• 141-478 OBSOLETE

• VENT BOX BASE RAIL

Bard part 141-478 is an OEM vent box base rail used in Bard wall mounted HVAC ventilation sections to support the vent box assembly and keep the ventilation components properly aligned during installation and service. If a rail is bent, rusted, or damaged, replacing it helps the vent section sit square so doors, partitions, blowers, and filters fit correctly and airflow paths stay consistent. This replacement is intended to match Bard factory fit and hole locations for straightforward installation, and it is best practice to confirm the unit model and vent box configuration before ordering to ensure correct application.